<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <meta name="renderer" content="webkit">
    <title>You have signed up for this activity</title>
    <!-- 引入Bootstrap CSS -->
    <link rel="stylesheet" href="<%=request.getContextPath()%>/css/bootstrap.min.css">
    <!-- 引入Bootstrap JS和jQuery -->
    <script src="<%=request.getContextPath()%>/js/jquery.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"></script>
    <script src="<%=request.getContextPath()%>/js/bootstrap.min.js"></script>
</head>
<body>
    <div class="container">
        <div class="alert alert-danger" role="alert">
            <h2>您已经报名过此活动，不允许重复报名</h2>
            <br />
            <a href="<%=request.getContextPath()%>/volunteer/activities_playground_page" class="btn btn-primary">返回活动广场</a>
        </div>
    </div>
</body>
</html>
    